University of Twente Student Theses


Thermoelectric properties of vertically aligned nanocomposite films

Slooten, Janiek van (2021) Thermoelectric properties of vertically aligned nanocomposite films.

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Abstract:Thermoelectric materials are a rapidly evolving research area as they are used in a wide range of applications. The optimizing of the thermoelectric properties is therefore of great interest. Using a new strategy with built in nanopillars, consisting of nanoparticles within a matrix of material, offer promising advantages as a key parameter, the thermal conductivity, could be lowered this way. The composite (La0.7Sr0.3MnO3)0.1 : (ZnO)0.9 is a candidate for promising thermoelectric properties. This composite was grown using pulsed laser deposition on 7 different substrates in order to investigate its growing behavior. The growth on a ZnO (0001) substrate showed the most promising results with a powerfactor (S2σ) of 23.6μW/(cmK2) which is in the range of the high-performance thermoelectric material Bi2Te3 at room temperature. [1] As seen on SEM images, it can be seen that the vertically aligned nanocomposite has been successfully grown on this sample. Clear LSMO pillars were observed within the ZnO matrix.
Item Type:Essay (Bachelor)
Faculty:TNW: Science and Technology
Subject:50 technical science in general
Programme:Advanced Technology BSc (50002)
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